Ultra-peripheral Au+Au collisions at PHENIX

Mate Csanad

Ultra-peripheral Au+Au collisions at PHENIX

Nuclear Experiment 2019-08-13 v2

Authors: Mate Csanad

Abstract

Ultra-peripheral collisions (UPC) of heavy-ions involve long range electromagnetic interactions at impact parameters twice larger than the nuclear radius, where no nucleon-nucleon collisions occur. The first measurement of photoproduction of $J/\psi$ and of two-photon production of high-mass $e^+ e^-$ pairs in ultra-peripheral nucleus-nucleus interactions will be presented, using Au+Au data at $\sqrt{s_{_{NN}}}$ = 200 GeV. The measured cross sections at midrapidity are consistent with various theoretical predictions.

Keywords

direct photon production in heavy-ion collisions heavy-ion collisions photon production

Cite

@article{arxiv.0907.4856,
  title  = {Ultra-peripheral Au+Au collisions at PHENIX},
  author = {Mate Csanad},
  journal= {arXiv preprint arXiv:0907.4856},
  year   = {2019}
}

Comments

5 pages, 3 figures, presented at the XVII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2009). The presentation was supported by the OTKA grant NK73143

Ultra-peripheral Au+Au collisions at PHENIX

Abstract

Keywords

Cite

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